CATC are aware that there were "hooky" versions of summative exercises in the early courses in circulation. Various small but devious changes were then made to the summative ex's so that anyone trying to perform a "rehearsed" run would give themselves away.
Hell and damnation was then positioned on high, ready to drop upon the unholy.
Small and devious changes will continue to be made to render any future attempts futile. The entire training system is under re-write now. If anyone has a simulator at home that can run Advanced runs, tell NATS. It must be a pretty fancy bit of kit...